Prep time does include the 2 hour refrigeration time. This is a fabulous recipe that I adapted from a key lime cheesecake recipe so I could serve a key lime cheese ball. NO more using that icky key lime powdered mix or jell-o! I serve cinnamon graham crackers, croissant and pound cake with this lovely creation. I have also served oven baked flour tortillas sprinkled with cinnamon sugar. RECIPE HAS BEEN EDITED TO REFLECT THE CORRECT INGREDIENT AMOUNTS WHICH LED TO THE FIRST 2 POSTERS CHEESE BALL NOT FORMING A BALL.